Impenetrablenes or Impenetrableness: How To spell?
The word Impenetrablenes is misspelled against Impenetrableness, a noun meaning "The quality of being impenetrable; impenetrability."
Impenetrableness has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  impenetrablene-s  Correct Spelling:  impenetrablene-ss 
Explore spell check of Impenetrableness to spell without errors.